mathe/Library/PackageCache/com.unity.shadergraph@14.0.8/Documentation~/Ellipse-Node.md

Ellipse Node

Description

Generates an ellipse shape based on input UV at the size specified by inputs Width and Height. The generated shape can be offset or tiled by connecting a Tiling And Offset Node. Note that in order to preserve the ability to offset the shape within the UV space the shape will not automatically repeat if tiled. To achieve a repeating dot effect first connect your input through a Fraction Node.

NOTE: This Node can only be used in the Fragment Shader Stage.

Ports

Name	Direction	Type	Binding	Description
UV	Input	Vector 2	UV	Input UV value
Width	Input	Float	None	Ellipse width
Height	Input	Float	None	Ellipse height
Out	Output	Float	None	Output value

Generated Code Example

The following example code represents one possible outcome of this node.

void Unity_Ellipse_float(float2 UV, float Width, float Height, out float4 Out)
{
    float d = length((UV * 2 - 1) / float2(Width, Height));
    Out = saturate((1 - d) / fwidth(d));
}